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Svetllana [295]
3 years ago
8

(Help! If possible can you explain how you got the answer plz and thank u) If the average weight of 10 sacks of soil is 40 lbs.,

the standard deviation is 4 lbs., and this is a
normal distribution, what will be the weight of 68% of bags of sand from the same batch?
A.36-44
B.40-44
C.38-40
D.36-40
Mathematics
1 answer:
defon3 years ago
6 0

Answer:

I think the answer is C but I'm not too sure so if it doesn't sound right don't click it cuz I don't want you get the answer wrong

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A set of data items is normally distributed with a mean of 240 and a standard deviation of 32. Convert 272 to a? z-score
dem82 [27]

Answer:

z-score = 1

Step-by-step explanation:

Given

Mean= μ=240

SD= σ=32

In order to find the z-score of a value, the mean is subtracted from the value and then divided by standard deviation.

The formula for z-score is:

z-score=(x-μ)/σ

Here x is the value whose z-score is to be found.

In the given question, x = 272

So,

z-score=(272-240)/32

=32/32

=1

So , the z-score for 272 is 1..

7 0
2 years ago
Michelle's mother bought 7 large pizzas for her birthday party. Each large pizza is cut into eighths. if 5/8 of the total slices
nirvana33 [79]
So we know that there are 8 slices per large pizza (7), so a total of 56 slices
we would set up a proportion
5/8=x/56
8 times 7 gives you 56, and we would do that same thing to the 5 (multiply it by 7) to get 35?
so now we know that 35 out of 56 slices were eaten
56-35 is 21
so there are 21 slices left over
5 0
2 years ago
A bag of chips costs $3.79, including tax. Mr. Connor wants to purchase chips for his class and has a $15 budget. Write an inequ
Verizon [17]

Answer:

D. $3.79x \leq $15

<em>Brainliest, please!</em>

Step-by-step explanation:

It costs $3.79 per bag of chips, and Mr. Connor can pay NO MORE THAN $15.

6 0
3 years ago
Read 2 more answers
Keith’s dog weighs 90 pounds and a healthy dog’s weight is less than 75 pounds. If Keith’s dog looses 1.25 pounds per week, how
vivado [14]

Answer:

12 weeks.

Step-by-step explanation:

Keiths dog will need to lose 15 pounds to get down to 75 pounds. If he loses 1.25 pounds per week, it will take 12 weeks to get down to 75 pounds. To figure this out, you would use the equation:

90 - 75 = 15

15 / 1.25 = 12

That is how you would get 12 weeks.

7 0
2 years ago
Selecting a marble from a bag containing 50 marbles and 45 orange marbles
tamaranim1 [39]
U have a 90% chance of picking an orange marble, 10% of picking a different color
7 0
2 years ago
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